Similar grades have been developed in major industrial countries
around the world.
420J2 stainless steel strip is mainly used to manufacture parts and
measuring tools, medical appliances, cutting knifes, and components
that require corrosion resistance, high strength and wear
resistance.
Since cracks are likely to occur during rapid quenching, if air
cooling is used, the corrosion resistance will be reduced.
Therefore, for large loaded parts, staged quenching should be used.
Sometimes in order to reduce the content of retained austenite in
the organization, cold treatment is required.